programming error/segfault while omitting Fingering.stencil with fingeringOrientations set 'left

[Thomas Morley]

Hi,

the following code is problematic

{
  \set fingeringOrientations = #'(left)
  \override Fingering #'stencil = ##f
  <g'-2 c''-4 >  %% chord needs two elements to trigger the bug
}

Versions 2.12.3 up to 2.16.2 print correctly, without error

Versions 2.18.2 up to 2.19.82 print correctly, but return:
programming error: Infinity or NaN encountered

Current master does:
Segmentation fault (core dumped)

Cheers,
  Harm